ASTROSAT CZTI

Data Quality Report

Orbit 42613

Creation date: 2024-06-27T22:42:11.716932
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_061T07_9000005818_42613cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42613cztM0_level2_quad_clean.evt
Size (bytes)983,329,920245,954,880
Size937.8 MB 234.6 MB
Events in quadrant A8,086,3401,639,595
Events in quadrant B7,579,5281,679,541
Events in quadrant C7,574,3431,616,848
Events in quadrant D11,958,3611,440,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331664
B0334484
C0321554
D0463354

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0490
C0490
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15514460.296506%
B155131390.896023%
C15513380.244956%
D155137234.660607%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 19691 15517 16 16 0.08% 0.10%
B 19690 15516 72 72 0.37% 0.46%
C 19690 15516 29 29 0.15% 0.19%
D 19690 15516 656 656 3.33% 4.23%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 1470790 4258.66 1685 1647 345.0
A 15 237 46736 130.7 1685 1647 345.0
A 13 6 32373 89.07 1685 1647 345.0
B 0 229 331776 1020.63 1673 1624 323.5
B 0 245 173674 531.87 1673 1624 323.5
B 15 85 123914 378.05 1673 1624 323.5
C 15 214 633165 1648.38 1649 1657 383.1
C 3 233 246088 638.02 1649 1657 383.1
C 14 254 227822 590.34 1649 1657 383.1
D 1 52 3374921 8565.79 1616 1568 393.8
D 2 16 884728 2242.56 1616 1568 393.8
D 2 249 431653 1092.09 1616 1568 393.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter